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eth: gmac: adapt to support DMA 32-bit in skb

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This commit is contained in:
jianghai
2023-06-26 17:40:07 +08:00
committed by Han Gao
parent b269dc8fa7
commit 599b048690
3 changed files with 45 additions and 12 deletions
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27
net/core/skbuff.c
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@@ -87,6 +87,21 @@ static struct kmem_cache *skbuff_ext_cache __ro_after_init;
#endif
int sysctl_max_skb_frags __read_mostly = MAX_SKB_FRAGS;
EXPORT_SYMBOL(sysctl_max_skb_frags);
gfp_t skb_gfp_dma32 = 0;
void skb_set_alloc_dma32(gfp_t gfp_dma32)
{
if(gfp_dma32 | GFP_DMA32)
skb_gfp_dma32 = __GFP_DMA32;
else
skb_gfp_dma32 = 0;
}
EXPORT_SYMBOL(skb_set_alloc_dma32);
gfp_t skb_get_alloc_dma32(void)
{
return skb_gfp_dma32;
}
EXPORT_SYMBOL(skb_get_alloc_dma32);
/**
* skb_panic - private function for out-of-line support
@@ -379,7 +394,7 @@ static void *__napi_alloc_frag(unsigned int fragsz, gfp_t gfp_mask)
{
struct napi_alloc_cache *nc = this_cpu_ptr(&napi_alloc_cache);
return page_frag_alloc(&nc->page, fragsz, gfp_mask);
return page_frag_alloc(&nc->page, fragsz, gfp_mask | skb_gfp_dma32);
}
void *napi_alloc_frag(unsigned int fragsz)
@@ -405,10 +420,10 @@ void *netdev_alloc_frag(unsigned int fragsz)
fragsz = SKB_DATA_ALIGN(fragsz);
if (in_irq() || irqs_disabled()) {
nc = this_cpu_ptr(&netdev_alloc_cache);
data = page_frag_alloc(nc, fragsz, GFP_ATOMIC);
data = page_frag_alloc(nc, fragsz, GFP_ATOMIC | skb_gfp_dma32);
} else {
local_bh_disable();
data = __napi_alloc_frag(fragsz, GFP_ATOMIC);
data = __napi_alloc_frag(fragsz, GFP_ATOMIC | skb_gfp_dma32);
local_bh_enable();
}
return data;
@@ -458,12 +473,12 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev, unsigned int len,
if (in_irq() || irqs_disabled()) {
nc = this_cpu_ptr(&netdev_alloc_cache);
data = page_frag_alloc(nc, len, gfp_mask);
data = page_frag_alloc(nc, len, gfp_mask | skb_gfp_dma32);
pfmemalloc = nc->pfmemalloc;
} else {
local_bh_disable();
nc = this_cpu_ptr(&napi_alloc_cache.page);
data = page_frag_alloc(nc, len, gfp_mask);
data = page_frag_alloc(nc, len, gfp_mask | skb_gfp_dma32);
pfmemalloc = nc->pfmemalloc;
local_bh_enable();
}
@@ -531,7 +546,7 @@ struct sk_buff *__napi_alloc_skb(struct napi_struct *napi, unsigned int len,
if (sk_memalloc_socks())
gfp_mask |= __GFP_MEMALLOC;
data = page_frag_alloc(&nc->page, len, gfp_mask);
data = page_frag_alloc(&nc->page, len, gfp_mask | skb_gfp_dma32);
if (unlikely(!data))
return NULL;